Wheel-rim.



PATBNTED JAN. 9, 1906. G.S.SG0TT.

WHEEL RIM.

APPLIGATION FILED MAY 3, 1905.

citrine sfrejrggsgagnnr erin CHARLES S. SCOTT. OF ADlZ, OizllO, ASSlGNOR OF ONE-HALF TO .lltelll A. Slllilltlilh', OF AKRON, OHIO.

WHEEL-Film.

No. scarse.

Specification of Letters Patent.

.Patented Jan. 9, 1.96.6.

Application led May 3, 1905. Serial No. 258,649.

To a/ZZ whom t 111,114/ wortccrnf Be it known that l, CHARLES S. SCOTT, a citizen of the United States, and a resident or Cadiz, Harrison county, Ohio, have invented I having a rim-flange lwith an eccentric outer` edge cooperating with a rotatable auxiliary flange. This auxiliary flange has its inner and outer edges shaped as eccentric circles in such a manner that the inner edge of the auxiliary flange is juxtaposed yto the outer edge of the rim-llange.- ln this matter the auxiliary flange in its working position has its outer edge concentric with the wheel and in a position' to coniine the pneumatic tire.

When, however, the auxiliary flange is rotating one hundred and eighty degrees, to what may be called its detaching position, its outer circular edge becomes eccentric to the wheel andthe pneumatic tire may be re-.' moved over that portion of the edge whichv lies nearest the wheel center.

ln the drawings, .Figure 1 is a side elevation of the vehicle-rim with the parts in their working position. Fig. 2 is a cross-section showing the pneumatic tire in place with vthe parts in a corresponding position. Fig.

3 is a side elevation oi a vehicle-rim with the parts in their detaching position. Fig. 4 is a cross-section of the parts in a corresponding position, showing the tire about to be detachedyand Fig. 5 is a detail.

The vehicle-rim consists of av hub A, having spokes A', secured in a suitable nianner to a rim l, having a riin-iange D on one side, ol any suitable construction, and the iiin-l'lange B, whicliis the subject of this invention, on the other side. The rim-ilange B has its inner surface B concentric with the axisl ol the wheel-rim and its outer edge B2 shaped asa circle struck from the point El as a center whichpoint 2 is eccentric to the wheel center 1.

The auxiliary flange C 'is annular in character and has an inner circle O2, which 1n the position shown in Fig. 2 has its center at the point 2. The diameter of the circle C2 is somewhat smaller than the diameter of the circle B2, so that the auxiliary flange is in all its positions held rfrom removal from the wheel-rim by the rim-flange B.' The outer edge O" of the auxiliary is a circle, which in the position shown in Fig. 2 has the point 1 for its center, which means that the outer edge of the auxiliary `flange acts, to all intents and purposes, in the position of the parts shown in Fig. 2 as if it were inv one piece with the rim-flange B. Put in another way, the eccentric rim-'I'lange B has a narrow part at the top and a broad-part at the bottoni in the position shown in Fig. 1. On the other hand, the auxiliary ilange (l has a broad part at the top and anarrowpart at the bottoniin the same position. Similar remarks apply for other angular positions around the wheelrim. The point is that in the position of Fig. 1 the broad parts of the rim-flange aline with thenarrow parts of the auxiliary liange, and vice versa, so that there is a uniform width of effective rim all round the wheel, which acts to hold the `tire in place.

lNhen it is desired to remove the pneumatic tire, it-'is merely necessary to rotate the auxiliary iiange through half a circle, where-- upon we have the position of'partsshown in Fig. 4, in which the narrow. part of the auxiliary flange has come 'into juxtaposition with the narrow part of the rim-flange. Nothing prevents the operator, therefore, from sliding the pneumatic tire. laterally froni the riin at this point, and a portion ol' the tire-shoe having thus become free'and being stretched on the chord of a circle instead of' `on the longer arc the 'remaining portion of the tire grows so loose on the wheel-rim that the whole tire may be peeled oil', as it were, in the same manner.

l prefer to make the inner face of the rini- -ilange B near its outer edge Bz fi'usto-conical.

in shape, in which case the outer face of the auxiliary ilange (l near the ed'ge C2 is made of similar shape. .lii Athis way when the pneumatic tire is inllatedit will be evident that the auxiliary flange' automatically centers IOC less friction when it is rotated through half a circle to get it into its detaching position.

It is lmanifestly desirable when the parts are in their detaching position that the base of the tire-slice should rest on a supporti, which is flush with or even above the edge B2 of the riin at the detaching-p'ointpthat is, he point of tlie edge B2 nearest the wheel center. While this object nia'y be accom plished in several ways, I prefer to use afillingpiece E, secured to the surface of' the rim in l any suitable manner, the thickness of which piece is so chosen that its upper face is flush with the detachingrpoint of the circle B2, as I The filling-piece is spaced to i just defined. leave a groove at the inner face of the rimflange in which groove the auxiliary flange may turn. In this way the selvage of, the

tire-shoe will meet with no obstruction as it slides laterally ofi' the wheel-rim in detaching and yet I have a shape of wheel-rim which may be readily rolled. I niay say, too, that my invention is applicable either to a pneumatic tire haying an inextensible selvage, in

which case the auxiliary flange may be flat or have its outer edge curved outwardly, or I may use my wheel rin'i for the so-called clencher-type, in which case the edge B of the auxiliary flange will be curved inwardly, as indicated in Fig.'5. I have shown in the drawings an inextensible typeof selvage I1" on the tire-shoe F, inflated by the usual inner vtube G.

I may sta tc in conclusion that I have ex-V o 2. A wheel-rim havinga rim-flange with an eccentric outer edge, and a rotatable auX-s iliary flange having inner and outer edges shaped as eccentric circles, the inner edge of the auxiliary flange being juxtaposed. to the outer edge of the rim-flange, substantially as described.

3. A wheel-rim having a rim-flange with an eccentric frusto-conical edge; and a rotatable auxiliary flange, having a frusto-cenical inner edge cooperating with the outer" edge of' the rim-flange, substantially as def-- scribed.

4. A wheel-rim havingl a rim-flange with an eccentric outer edge and a filling-piece spaced to leave a groove at the inner face of the rini-flange, in combination with 'an auxiliary flange rotatable in the groove and copcrating with the rim-flange, substantially as described. f

5. A wheel-rim having a rini-fiange with an eccentric outer edge, a rotatable auxiliary flange coperating therewith, andl a pneu matic tire forcing the auxiliary flange against theriin-flange when inflated, substantiallyl as described.

'6. A wheel-rim having a rim-flange with an eccentric outer edge, a rotatable auxiliary flange having inner and outer edges shaped as eccentric circles, the inner edge ofthe auX- iliary flange being juxtaposed to the outer edge of the rim-flange, and a pneumatic tire forcing the auxiliary flange against the rim'- flange when inflated, substantially asdescribed.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CIIAS. S. SCOTT.

Witnesses; y

ROBERT 0. SCOTT, MILTON TAGGART., 

